Apparatus for beading boiler-tubes.



J. E. LIENAU.

APPARATUS FOR BEADING BOILER TUBES. APPLICATION FILED FEB. 5, 19l6.

1 1 86, 1 O7 .7 Patented June 6, 1916.

2 SHEETS-SHEET I.

THE COLUMBIA PLANOGRAPH 430-, WASHINGTON, D. c.

J. E. LIENAU.

APPARATUS FOR BEADtNG BOILER TUBES.

APPLICATION FILED FEB. s, 1915.

1 1 86, 1 07. Patented June 6, 1916.

2 SHEETSSHEEI 2.

' mx wg UNITED STATES PATENT OFFICE.

JOHN E. LIENAU, or connova, NEBRASKA, ASSIGNOR or ONE-THIRD T0 FRANK 1a:

. DORSEY, or GORDOVA, NEBRASKA.

APPARATUS FOR BEADING BOILER-TUBES.

Specification of Letters Patent.

' Patented June 6, 1916.

Application filed February 5, 1916. Serial No. 76,334.

To all whom it may cmwern:

Be it known that 1, JOHN E. LIENAU, a citizen of the United States ofAmerica, residing at Cordova, in the county of Seward and State ofNebraska, have invented certain new and useful Improvements in Apparatusfor Beading Boiler-Tubes, of which the following is a specification.

This invention relates to new and useful improvements in apparatus forbeading or turning over boiler tubes to lock the same upon the fluesheet.

In carrying out my invention I propose to produce an apparatus of thisclass which may be easily and quickly positioned and tightly sustainedin a boiler tube and which is provided with a revoluble carriage havingbeading rollers thereon arrangedto engage with the end of the tubeproject ng beyond the flue sheet and to contact with the same in such amanner as to turn the edge thereof over onto the flue sheet withoutdanger of breaking or otherwise inflicting injury to either the tube orthe flue sheet.

It is also my purpose to construct an apparatus of this characterwherein the carriage of the beading rollers is engaged by a followermember and compressed thereby, at suitable and desired intervals toadvance the carriage to its work.

It is another object of the invention to produce an apparatus of thisclass which shall embody the desirable features of simplicity inconstruction, cheapness in manufacture, and ease and accuracy inoperatlon.

With the foregoing objects in view and others which will appear as thenature of the invention is more fully understood, the improvementresides in the construction, combination and arrangement of parts setforth in the following specification and falling within the scope of theappended claim.

The essential features of the invention involved in carrying out theobjects above in dicated, are necessarily susceptible of embodiment invarious forms of construction without departing from the scope of theinvention, but certain preferred and practlcal embodiments areexemplified by the accompanying drawings, in which Figure 1 is a sideelevation illustratmg the application of the improvement, the tube andflue sheet being shown in section, Flg. 2 is an end elevation of theimprovement, the heading rollers being omitted, Fig. 3 is a sectionalview on the line.33 of Fig. 1, the beading rollers being omitted, Fig.4: is a horizontal sectional view approximately on the line H of Fig. 1,Fig. 5 is a sectional view approximately on the line 55 of Fig. 1, Fig.6 is a'perspective view of the carriage for the beading rolls, Fig. 7 isa similar view of the follower operating lever, and Fig. 8 is a detailsectional view on a line with the short shafts of the carriage andillustrating the manner in which the beading rolls may be adjustedtoward or away from each other to compensate for different diameters oftubes.

Referring now to the drawings the numeral 1 designates the flue sheetand 2 a flue or tube for the sheet.

Before my apparatus is applied the tube 2 has been arranged to project asuitable distance through the opening provided therefor in the fluesheet and has been provided with the outwardly extending head or bulgeto contact with the inner face of the flue sheet.

My improved apparatus includes a stock 3 which is in the nature of atubular member or mandrel and which is of a cross sectional diametersufficient to permit of the same being readily inserted into the tube.The stock 3, adjacent its inner end is pro vided with spacedlongitudinally disposed slots and within each of these is arranged asubstantially rectangular wedge or jaw member 4. These jaws arepivotally secured to the stock, as indicated by the numerals 5 and eachof the jaws projects a suitable distance beyond the said inner end ofthe stock. The jaws, upon their inner edges from their outer ends arebeveled and are adapted to be contacted by the cone-shaped head 6 of abolt 7. This bolt extends through the bore of the stock and is providedwith a nut 8. By adjusting this nut against the outer end of the stockthe bolt 7 may be moved longitudinally to cause the jaws 4: to be swungoutwardly of the stock to cause the teeth of the same to engage with thebore of the tube 2 and consequently hold the apparatus upon the tube, orto permit of the jaws being released from such engagement with the tube.

The stock is round in cross section and from its outer end is of a lessdiameter than that of its inner end, providing a shoulder- 9 between thetwo diameters of the stock. The said outer end of the stock is also, for

a suitable distance provided with exterior threads 10.

Arranged upon the reduced diameter of the stock and revoluble thereon isa carriage 11. This carriage includes a head 12 and a tubular body 13.The head is of an approximately rectangular formation and has itsopposite ends centrally provided with outwardly extending short shaftsor trunnions 14. Upon each of these shafts is arranged a beading roller15. These rollers are peripherally grooved and are so arranged that theinner flanges 16 thereof are disposed in a line with the inner edge orbore of the tube 2 so that the said flanges will contact with the innersurface of the tube when the main portion of the rollers is acting uponthe projecting end of the tube and consequently the said flanges 16 willhave a tendency to bulge the tube outwardly or toward the wall of theopening in the sheet 1 through which the tube is projected, thusovercoming any tendency of an inward bulging of the tube during theprocess of turning over the end of said tube and as a result providingan effective water tight joint between the tube and boiler sheet.

Secured upon the tubular body 13 of the carriage is a ratchet wheel 17which has its teeth engaged by a spring pressed pawl 18 carried. by anoperating handle 19. The handle has its headed end bifurcated tostraddle the ratchet wheel 17 and its said head provided with openingswhich find a bearing upon the tubular body 18 to the opposite sides ofthe said ratchet wheel. The pawl 18 is provided with a stem 20 thatpasses through an elongated opening in one of the sides of the operatinghandle whereby the pawl may be manually brought-out of engagement withthe teeth of the ratchet wheel when desired.

The numeral 21. designates a follower member which is in the nature of anut and which is screwed on the threads 10 of the stock to contact withthe end of the tubular ,body 13 of the carriage, and when screwed.

in the direction of the carriage will advance the carriage to its work.The follower member 21 is provided with a rounded periphery, the samebeing formed with spaced notches 22.

Pivotally secured, as at 23, to one of the sides of the handle 19 is alever 24. This lever, inward of its pivot, is formed with a curved orarcuate arm 25 that has its end arranged angularly in the direction ofthe notched periphery of the follower member 21, and the said angularend or lug, indicated by the numeral 26, is adapted to be arranged inone of the notches 22 when the lever is swung in the direction of thehandle, to screw the follower member upon the stock and advance thecarriage to its work simultaneously with the rotation. of the carriageby the swinging of the handle. The lever 24, at the arcuateportion'thereof, and inward of its pivot, is formed with a right angularfinger 27, and secured upon the handle is a flat spring 28 whichcontacts with the offset end of the finger to swing the same to bringits lug or tooth 26 away from the follower member 21, thus permittingthe carriage to revolve without advancing the same to its work. This isan important fea ture of the invention for the reason that should. thebeading rollers be at all times forced against the end of the tube 2,the constant pressure upon the tube will cause the breakage or theuneven beading or turning over thereof.

In order to permit of the apparatus being employed in connection withtubes of varying diameters as well as to arrange the beading rollers sothat their inner flanges will at all times be properly disposed withrelation to the inner edge or bore of the tube, 1 arrange upon the shortshafts of the carriage between the head thereof and the said rollers oneor a number of washers 29 which also serve to reduce the friction. bythe contact of the rollers with the end walls of the head of the carriae, and consequently materially assist in the ease of operation. Therollers are detachable, being secured to the short shafts preferablythrough the medium of cotter pins, as shown in the drawings, and all ofthe parts of my apparatus are interchangeable.

The stock may be arranged so that the carriage may contact with theshoulder 9 of the stock and thus limit the movement of the carriage in abeading direction, and from the above description, taken in connectionwith the drawings, the simplicity of the structure, the ease andaccuracy with which the head on the tube will be formed and theoperation of the same will, it is thought, be apparent to those skilledin the art to which such invention appertains without further detaileddescription.

Having thus described the invention, what I claim is:

In an apparatus for beading tubes, the combination. with a stock havinggripping jaws thereon, of a carriage loosely arranged upon the stock,said carriage including a substantially rectangular head and a tubularbody, short shafts upon the opposite ends of the head, beadingrollersjournaled on said shafts, a ratchet wheel upon the L tubular body, ahandle member having a bifurcated end loosely arranged on the carriageand straddling the ratchet, a spring pressed pawl carried by the handlefor en gaging the ratchet, a notched follower mem ber threaded on thestock disposed to coin tact with the tubular end of the carriage, alever pivotally secured to the handle, said lever having a curved endterminating in a i tooth disposed to engage With the notches aflixes hissignature in the presence of two of th; follnver menber, said leverlgaving Witnesses. an 0 set nger an a spring mem er 0n the handleconthcting With the said finger JOHN LIENAU 5 to swing the lever tobring the toothed end Witnesses:

thereof away from the follower. L. R. LULL,

In testimony whereof JOHN E. LIENAU A. G. BURBANK.

Copies 0! this patent may be obtained for live cents each, by addressingthe "Commissioner of Patents, Washington, D. C.

